International Business Machines Corporation

Ankur Srivastava

Sarvesh S Patel

Kushal S Patel

Subhojit Roy

A computer-implemented method according to one embodiment includes causing a plurality of I/O queues to be created between an initiator and a storage target device. The created I/O queues are reserved for I/O requests for which adjustments of current priorities of extents of data associated with the I/O requests are to be performed. The method further includes determining identifying information of an I/O request sent from the initiator to the storage target device and determining whether the I/O request was sent from the initiator to the storage target device using one of the created I/O queues. In response to a determination that the I/O request was sent using a first of the created I/O queues having one of the adjustments associated therewith, a tiering manager of the storage target device is instructed to perform the adjustment on the current priority of the extent of data associated with the I/O request.

Data movement intimation using input/output (I/O) queue management

A computer-implemented method and a computer system for improving cached workload management. A host, which is in a system comprising the host and a storage system, obtains information about classes of applications accessing the storage system. The host determines input/output queues dedicated to respective ones of the classes. The storage system creates, in the storage system, cache partitions dedicated to the respective ones of the classes, based on information about classes. The host creates the input/output queues and sets bit flags for respective ones of the input/output queues. The host pumps inputs/outputs coming from the respective ones of the classes to the respective ones of the input/output queues. The storage system directs the input/output queues to respective ones of the cache partitions.

Cached workload management for a multi-tenant host

Disclosed is a computer implemented method to manage queue overlap in storage systems, the method comprising, identifying, by a storage system, a plurality of queues including a first queue and a second queue. The storage system includes a plurality of cores, including a first core and a second core, and wherein the first queue is associated with a first host and the second queue is associated with a second host. The method also comprises, determining the first queue and the second queue are being processed by the first core. The method further comprises, monitoring the workload of each cores and identifying a load imbalance, wherein the loam imbalance a difference between a first workload associated with the first core, and a second workload associated with the second core. The method also comprises, notifying the second host that the load imbalance is present.

Queue management in solid state memory

A computer-implemented method, according to one embodiment, includes initiating, by a computer, a connection with a storage controller. A determination is made, by the computer, if a number of compressed volumes on a target side present in a storage system comprising the storage controller. In response to determining at least one compressed volume, a number of queues are dedicated based on the number of compressed volumes. The number of dedicated queues are sent to the storage controller. Moreover, the number of dedicated queues are created. Compressed input/outputs (I/Os) are sent through at least one of the dedicated queues to at least one of the at least one compressed volume via the storage controller.

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Pune, India

Ankur Srivastava